Watch Demi Lovato and Nick Jonas Blast the hits in 'Carpool Karaoke'

Nick Jonas and Demi Lovatohave shared many rides in the 10 years they've been friends. None, however, have been quite like their trip with James Corden.

The Late Late Show host was at his singing and probing best as he took the wheel for a "Carpool Karaoke" session through Los Angeles with the pop star pair.

Nick Jonas & Demi Lovato Will Embark on Joint Tour

When Corden wasn't grilling Lovato and Jonas about their luck in love, the trio was belting out Lovato's "Heart Attack" and "Cold Stone," Jonas' "Close," and "Jealous" and DNCE's "Cake By The Ocean."

Corden didn't waste any time exploring the nature of the Jonas-Lovato relationship. "I don't know if you've noticed by I kinda go for older guys, no offense," responded Lovato, looking in Jonas' direction.

Lovato then teased Jonas by exploring his dating life. "Cyrus, Gomez, Cyrus, Gomez and then I don't know what else happened," she said, as a clearly-embarrassed Jonas asked to change subject. Tough luck. Corden then asked about Jonas' purity ring phase? Jonas, responding to the question of whether he'd been tied up, discussed being "literally chained to the wall" as he once performed a song in a gay club.

James Corden Shares His 'Carpool Karaoke' Wishlist

Corden used the occasion to audition for a part in Jonas and Lovato's joint Future Now tour, which kicks off next month. The British funnyman was put through his paces as they stopped the car for an impromptu busking stint with Lovato's "Confident," to the delight of dozens of onlookers. Watch the clip below.

Check out more from Corden in the gallery below!

More on AOL Entertainment:
'Real Housewives' star Bethenny Frankel addresses plastic surgery rumors
Halle Berry works out in a bikini on the beach -- watch!
Katy Perry and Orlando Bloom pack on the PDA at Cannes after Selena Gomez romance rumors